two red fire hydrants with valves from the ship's fire suppression system.

red yellow iron purple two fire hydrants valves ship#39aph39#s suppression system standing vividly wall contrasting colors safety equipment key feature aboard vessel system hose firefighting extinguisher fighting extinguish foam connect pump fireman protective rescue prevention ship marine urgency prevent requirement help accessory isolated utility pipe department tool heavy plug valve object firefighter safe flame emergency protection danger hydrant red security safety metal pressure water industrial control equipment closeup